Secondary actuator
US6141188A · kind A · utility
6Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Aug 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An actuator for a direct access storage device has a secondary actuator with discrete or distributed masses such that a mechanical nodal point is created. The nodal point does not move with respect to the primary actuator. The secondary actuator is attached to the primary actuator at a nodal point. No net forces are coupled to the primary actuator when the secondary actuator is activated in a vibratory movement by a piezo-electric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.